EP2045607A3 - Automatic analyzer - Google Patents

Automatic analyzer Download PDF

Info

Publication number
EP2045607A3
EP2045607A3 EP20080015072 EP08015072A EP2045607A3 EP 2045607 A3 EP2045607 A3 EP 2045607A3 EP 20080015072 EP20080015072 EP 20080015072 EP 08015072 A EP08015072 A EP 08015072A EP 2045607 A3 EP2045607 A3 EP 2045607A3
Authority
EP
European Patent Office
Prior art keywords
air bubbles
pipe
sample liquid
syringe
event
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20080015072
Other languages
German (de)
French (fr)
Other versions
EP2045607A2 (en
EP2045607B1 (en
Inventor
Hiroshi Ohga
Masato Ishizawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi High Tech Corp
Original Assignee
Hitachi High Technologies Corp
Hitachi High Tech Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi High Technologies Corp, Hitachi High Tech Corp filed Critical Hitachi High Technologies Corp
Publication of EP2045607A2 publication Critical patent/EP2045607A2/en
Publication of EP2045607A3 publication Critical patent/EP2045607A3/en
Application granted granted Critical
Publication of EP2045607B1 publication Critical patent/EP2045607B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G01N35/1016—Control of the volume dispensed or introduced
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/00594—Quality control, including calibration or testing of components of the analyser
    • G01N35/00613—Quality control
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G01N2035/1025—Fluid level sensing

Abstract

If an expected amount of sample liquid cannot be suctioned because of incorrect liquid surface detection, correct measurement results may not be obtained. The motor driving a syringe reversely rotates for backlash correction and then stops. The movement of the sample cannot respond to the sudden operation of the syringe at that time because of the viscosity of sample liquid inside the pipe, thus showing large overshoot and undershoot of the pressure value. When air bubbles are present inside the pipe, the pressure inside the pipe during the backlash fluctuates differently from that during normal suction because of the cushioning effects of the air bubbles. In the present invention, pressure fluctuations are sampled at fixed time intervals and subjected to arithmetic processing, using as a trigger the event (or a sign temporally close to that event) of the reverse motor rotation for the backlash correction, thereby discriminating normal suction from suction of sample liquid with undesirable air bubbles.
EP08015072.5A 2007-08-31 2008-08-26 Automatic analyzer Active EP2045607B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007224993A JP4491477B2 (en) 2007-08-31 2007-08-31 Automatic analyzer

Publications (3)

Publication Number Publication Date
EP2045607A2 EP2045607A2 (en) 2009-04-08
EP2045607A3 true EP2045607A3 (en) 2015-05-20
EP2045607B1 EP2045607B1 (en) 2020-07-29

Family

ID=40373498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08015072.5A Active EP2045607B1 (en) 2007-08-31 2008-08-26 Automatic analyzer

Country Status (4)

Country Link
US (2) US20090074614A1 (en)
EP (1) EP2045607B1 (en)
JP (1) JP4491477B2 (en)
CN (1) CN101377521B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110046935A (en) * 2009-10-29 2011-05-06 포항공과대학교 산학협력단 Droplet discharging device
CN101881706B (en) * 2010-07-05 2014-04-02 深圳迈瑞生物医疗电子股份有限公司 Sampling device and method
DE102014017971A1 (en) 2014-12-04 2016-06-09 Eppendorf Ag Pipetting device and method for operating a pipetting device
US10157590B1 (en) 2015-12-15 2018-12-18 Apple Inc. Display with localized brightness adjustment capabilities
CN107271701B (en) * 2016-04-08 2019-06-11 北京德鲁伊医疗器材有限公司 A kind of multi-purpose medical detector and detection system
JP6908631B2 (en) * 2017-02-07 2021-07-28 株式会社日立ハイテク Automatic analyzer
US11300488B2 (en) * 2017-02-07 2022-04-12 Hitachi High-Tech Corporation Automatic analysis device
US11320443B2 (en) * 2017-03-10 2022-05-03 Hitachi High-Tech Corporation Automatic analysis device
CN109030093B (en) * 2017-06-08 2021-09-10 深圳迈瑞生物医疗电子股份有限公司 Bubble monitoring method, bubble monitoring device and sample analyzer
CN107966928B (en) * 2017-11-21 2022-03-25 上海联影医疗科技股份有限公司 Back clearance error compensation method, device and system, computer equipment and radiotherapy equipment
JP7261617B2 (en) * 2019-03-04 2023-04-20 株式会社日立ハイテク automatic analyzer
CN110794153A (en) * 2019-11-04 2020-02-14 广州科方生物技术股份有限公司 Automatic dry type fluorescence immunoassay instrument
CN110794159A (en) * 2019-11-04 2020-02-14 广州科方生物技术股份有限公司 Sample adding mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5488854A (en) * 1992-03-03 1996-02-06 Abbott Laboratories Pipetting apparatus
US5723795A (en) * 1995-12-14 1998-03-03 Abbott Laboratories Fluid handler and method of handling a fluid
US6370942B1 (en) * 2000-05-15 2002-04-16 Dade Behring Inc. Method for verifying the integrity of a fluid transfer
JP2003254982A (en) * 2002-03-05 2003-09-10 Hitachi High-Technologies Corp Dispensing apparatus and automatic analyzer using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06148206A (en) * 1992-11-12 1994-05-27 Toshiba Corp Dispensor and dispensing method
JPH08233831A (en) * 1995-02-28 1996-09-13 Suzuki Motor Corp Apparatus for holding and selecting electromotive pipette
JP3682138B2 (en) * 1997-02-13 2005-08-10 アロカ株式会社 Dispensing device
JP2000121649A (en) * 1998-10-09 2000-04-28 Furuno Electric Co Ltd Automatic dispensing device
JP4045211B2 (en) 2003-06-27 2008-02-13 株式会社日立ハイテクノロジーズ Automatic analyzer
JP2005227102A (en) * 2004-02-12 2005-08-25 Aloka Co Ltd Dispenser
US7479391B2 (en) 2004-12-10 2009-01-20 Tecan Trading Ag Pipetting apparatus with integrated liquid level and/or gas bubble detection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5488854A (en) * 1992-03-03 1996-02-06 Abbott Laboratories Pipetting apparatus
US5723795A (en) * 1995-12-14 1998-03-03 Abbott Laboratories Fluid handler and method of handling a fluid
US6370942B1 (en) * 2000-05-15 2002-04-16 Dade Behring Inc. Method for verifying the integrity of a fluid transfer
JP2003254982A (en) * 2002-03-05 2003-09-10 Hitachi High-Technologies Corp Dispensing apparatus and automatic analyzer using the same

Also Published As

Publication number Publication date
JP2009058318A (en) 2009-03-19
US20090074614A1 (en) 2009-03-19
US8231843B2 (en) 2012-07-31
JP4491477B2 (en) 2010-06-30
EP2045607A2 (en) 2009-04-08
CN101377521A (en) 2009-03-04
EP2045607B1 (en) 2020-07-29
US20110267198A1 (en) 2011-11-03
CN101377521B (en) 2013-01-16

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